Question

an effect of the supreme court’s ruling in scott v. sandford was that
legal protection for slavery was strengthened
legal protection for slavery was weakened
the abolitionist movement was strengthened
the missouri compromise was strengthened

Explanation:

In the Dred Scott v. Sandford case, the Supreme Court's ruling strengthened legal protection for slavery (it declared that African Americans, whether enslaved or free, could not be American citizens and that the Missouri Compromise's restriction on slavery in certain territories was unconstitutional, which bolstered the legal standing of slavery). The Missouri Compromise was weakened (since the ruling invalidated its slavery - restriction clause), and the abolitionist movement was not strengthened by this pro - slavery ruling. So the correct statement is that legal protection for slavery was strengthened.

Answer:

A. legal protection for slavery was strengthened